CN113292127A

CN113292127A - Dissolved air floating type double-beam cyclone separation device

Info

Publication number: CN113292127A
Application number: CN202110576749.0A
Authority: CN
Inventors: 李鹏; 冷帅; 郭艳华; 韩小玉; 刘耀强; 王喃喃; 马立成; 陆永高; 张倩倩
Original assignee: Doublestar Group Corp
Current assignee: Doublestar Group Corp
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2021-08-24

Abstract

The invention discloses a dissolved air flotation type double-beam cyclone separation device, which belongs to the technical field of tire manufacturing. The double-beam swirling flow is realized through the design method of the bidirectionally cut water inlet pipe and the guiding swirling plate in the flotation cylinder. After the sewage enters at high speed through the two tangential inlet pipes, a swirling flow will be generated. The design of the beam swirling flow accelerates the sedimentation of sludge and heavy suspended solids to the bottom, and a small amount of suspended solids and air bubbles will follow the waste water at the bell mouth. After flowing out, it flows up to the flotation cylinder to achieve the first separation purpose. The waste water containing air bubbles and carbon residue flowing out of the bell mouth will generate a second swirl flow when it passes through the guiding swirl plate. At this time, the contact time between the air bubbles and the carbon residue is increased. The adhering carbon residue enters the scum collection cylinder to achieve the purpose of the second separation. This design method improves the collection rate of oil and carbon residue, increases the separation effect of the equipment, improves the purification degree of wastewater, and is more environmentally friendly.

Description

Dissolved air floating type double-beam cyclone separation device

Technical Field

The invention relates to the technical field of tire manufacturing, in particular to a dissolved air floating type double-beam cyclone separation device.

Background

The thermal cracking process conforms to the recycling and harmless principle of waste treatment, and becomes an effective mode for treating waste tires at present. The thermal cracking treatment of waste tyre is carried out by heating tyre in oxygen-free or inert gas environment, decomposing at a certain temperature, and recovering pyrolysis oil, pyrolysis gas and carbon residue. Therefore, the industrial wastewater generated by the pyrolysis project contains pyrolysis oil and carbon slag, and if the industrial wastewater is discharged, water resources and land resources are polluted, the ecological environment is destroyed, and the industrial wastewater does not meet the national wastewater discharge standard.

The conventional wastewater treatment methods at present comprise the following steps:

1. the gravity suspension technology comprises the following steps: by utilizing the density difference between oil and water, the oil can float on the surface of the water, and the oil-water separation is realized. The technology has low oil removal efficiency and larger volume of the using device.

2. Chemical agent degreasing: the colloid particles are aggregated and settled by using chemical agents, thereby realizing the purpose of wastewater treatment. However, this method causes chemical contamination, increases the cost of chemicals, etc., or causes clogging of equipment, lowering the treatment efficiency.

3. The filtration technology comprises the following steps: the oil removal is achieved by using some filter material, such as walnut shells. However, if the inlet water concentration of the sewage is higher, the blockage can be caused, the filtering effect can not be achieved, and even a large amount of water is needed for cleaning, so that more waste water is treated.

4. The hydraulic cyclone technology comprises the following steps: under the action of centrifugal force, the oil migrates towards the centre of the fluid vortex, while the water moves towards the other end. This technique requires a large pressure differential within the hydrocyclone and a high density differential between the oil and water, otherwise separation is difficult. And the hydrocyclone technology cannot effectively remove solids entrapped by oil.

5. Air flotation technology: air is introduced into the wastewater, and the generated small bubbles can adhere to and wrap oil and suspended solids in the wastewater, so that the density difference between the small bubbles and water is increased, and the floating speed of the small bubbles to the water surface is increased.

Disclosure of Invention

Aiming at the technical problems of various wastewater treatment, the invention provides the dissolved air floating type double-beam cyclone separation device, which can improve the collection rate of oil and carbon residues, increase the separation effect and the purification degree of wastewater, and better accord with the concepts of green production and green development.

In order to solve the technical problems, the invention provides a dissolved air floating type double-beam cyclone separation device which comprises a vertically arranged tank body container, wherein an air outlet and a sludge outlet are respectively arranged at the top end and the bottom end of the container; the outside of the suspension cylinder is connected with a flotation cylinder for secondary separation to remove the scum of smaller particles, and the sewage after secondary separation further removes the scum of smaller particles and reaches the dischargeable standard, and then is discharged through a drainage pipeline arranged at the lower part of the container wall.

Preferably, the outer wall of the lower part of the cyclone cylinder is provided with a cyclone plate for increasing the contact time of bubbles and suspended matters.

Preferably, the container is provided with two opposite water inlet pipelines.

Preferably, the outer shape structure of the cyclone cylinder is a cylinder body, and the lower end of the cylinder body is a horn opening.

Preferably, the height of the flotation cylinder is higher than that of the water inlet pipeline.

Compared with the prior art, the invention has the following technical effects:

a dissolved air floating type double-beam rotational flow separation device realizes the design concept of double-beam rotational flow through a design method that a water inlet pipe is cut in a two-way mode and a guide rotational flow plate is arranged in a flotation cylinder. The sewage can produce the whirl behind two tangential inlet tube mouths high-speed entering, and the design of restraint whirl has accelerated fatlute, the heavier suspended solid of weight and has subsided to the bottom, and a small amount of suspended solids, bubble etc. can be along with waste water upwelling to the flotation cylinder after the bell mouth flows, reach the separation purpose for the first time. From the waste water that contains bubble, charcoal sediment of horn mouth outflow, when the guide whirl board, produce the whirl of second time, increased the contact time of bubble with the charcoal sediment this moment, partial suspended solid gathers once more, subsides, and in a small amount of bubble adhesion charcoal sediment entered into the dross collecting vessel, reaches the purpose of separation for the second time. The design mode improves the collection rate of oil and carbon slag, increases the separation effect of equipment, improves the purification degree of wastewater, and better accords with the concepts of green production and green development.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic view of the overall structure of the present embodiment;

wherein 1-a container; 2-a water inlet pipeline; 3-a drainage pipeline; 4-a sludge discharge port; 5-a scum discharge pipeline; 6-an exhaust port; 7-cyclone cylinder; 8-a scum collection canister; 9-treated water collecting bin; 10-a flotation cylinder; 11-swirl plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a dissolved air floating type double-beam cyclone separation device which can improve the collection rate of oil and carbon residues, increase the separation effect and the purification degree of wastewater, and better accord with the concepts of green production and green development.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1, the invention provides a dissolved air floating type dual-beam cyclone separation device, which comprises a vertically arranged tank body container 1, wherein an air outlet 6 and a sludge outlet 4 are respectively arranged at the top end and the bottom end of the container 1, the air outlet 6 is used for discharging air bubbles, the sludge outlet 4 is used for discharging oil sludge, a cyclone cylinder 7 for separating sewage for the first time to remove larger-particle scum is vertically arranged in the container 1, the cyclone cylinder 7 is structurally arranged into a cylinder body, and the lower end of the cylinder body is arranged into a horn-shaped opening; 1 wall of container with communicate inlet channel 2 between the whirl section of thick bamboo 7, during sewage (including quality of water, oil, charcoal sediment) together pours into a whirl section of thick bamboo 7 into through inlet channel 2 with the bubble, the effect of bubble is impurity and the water quality separation in making the sewage, rivers produce the whirl phenomenon in whirl, 7 to flow downwards, fatlute descends to the separator bottom under the effect of gravity, discharges through mud discharging port 4, accomplishes first separation like this.

The upper end of the cyclone cylinder 7 is connected with a scum collecting cylinder 8, and a scum discharge pipeline 5 is arranged in the scum collecting cylinder 8 to discharge scum separated from sewage; the outside of the suspension cylinder is connected with a flotation cylinder 10 which is used for carrying out secondary separation to remove the scum of smaller particles, the scum of smaller particles in the sewage after the secondary separation is further removed, the sewage reaches the dischargeable standard, and the sewage is discharged through a water discharge pipeline 3 arranged at the lower part of the wall of the container 1. The sewage, air bubbles, carbon slag, oil and other suspended matters after the first separation move downwards in a cyclone manner, part of the suspended matters are gathered and sink to the bottom of the separation device under the action of centrifugal force, the sewage and a small amount of suspended matters flow into the flotation cylinder 10 from a bottom bell mouth, and the flotation process is completed in the flotation cylinder 10. Finally, the scum enters a scum collecting cylinder 8 and is discharged from the scum discharge pipeline 5; the treated water enters the treated water collecting chamber 11 and is discharged at the water discharge pipe 3.

The bubble particle diameter of using dissolved air flotation design output is littleer, and the dispersity is higher, and is better with the adhesion effect of suspended solid, can handle tiny charcoal sediment and suspended oil in the waste water, has improved the collection rate of oil and charcoal sediment, has increased the separation effect of equipment, and the purification degree of higher waste water more accords with the theory of green production, green development.

Specifically, in the embodiment of this scheme, 7 lower part outer walls of cyclone cylinder set up the whirl board 11 that is used for increasing bubble and suspended solid contact time, and 11 appearances of whirl board are panel, are certain angle settings along rivers with rivers, when the second separation, have increased the contact time of bubble and suspended solid, and the separation effect is more showing.

Specifically, in the embodiment of the present invention, the container 1 is provided with two opposite water inlet pipes 2, and the contact time of the bubbles and the suspended matters and the suspended matter gathering time can be increased by the double-stream rotational flow, so as to further improve the separation efficiency.

Specifically, in the embodiment of the present embodiment, the height of the flotation cylinder 10 is higher than that of the water inlet pipe 2, so that the volume of the flotation cylinder 10 is increased, and the contact time of bubbles and suspended matters is increased, thereby further improving the separation efficiency.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims

1. a dissolved air flotation type double beam cyclone separation device, is characterized in that, comprises the tank container that is arranged vertically, and the top and bottom end of described container are respectively provided with exhaust port and mud discharge port, described A swirl cylinder is vertically arranged inside the container to separate the sewage for the first time to remove larger particles of scum, the wall of the container and the swirl cylinder are connected with a water inlet pipe, and the upper end of the swirl cylinder is connected to the float A slag collection cylinder is provided with a scum discharge pipe to discharge the scum separated from the sewage; the external connection of the suspension cylinder is used for the second separation to remove the flotation of smaller particles of scum The sewage after the second separation has further removed smaller particles of scum and reached the dischargeable standard, and is then discharged through the drainage pipe arranged at the lower part of the container wall.

2 . The dissolved air flotation type double-beam cyclone separation device according to claim 1 , wherein the outer wall of the lower part of the cyclone cylinder is provided with a cyclone plate for increasing the contact time between the bubbles and the suspended matter. 3 .

3 . The dissolved air flotation type dual-beam cyclone separation device according to claim 1 , wherein the container is provided with two opposite water inlet pipes. 4 .

4 . The dissolved air flotation type dual-beam cyclone separation device according to claim 1 , wherein the external structure of the cyclone cylinder is set as a cylinder body, and the lower end of the cylinder body is set as a horn opening. 5 .

5 . The dissolved air flotation double-beam cyclone separation device according to claim 1 , wherein the height of the flotation cylinder is higher than that of the water inlet pipe. 6 .